<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>更换头像</title>
</head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
    <p>上传头像：<input type="file" name="file" multiple></p>
    <input type="submit" name="" id="" value="提交" />
</form>
</body>
</html>